Author: mav
Date: Sat Jun 9 09:08:33 2012
New Revision: 236803
URL: http://svn.freebsd.org/changeset/base/236803
Log:
MFC r231745 (by gibbs):
Limit the ST3146855LW U320 drive to 55 tags to avoid command timeouts
under load.
Submitted by: Gelson Borsoi
Modified:
stable/8/sys/cam/scsi/scsi_xpt.c
Directory Properties:
stable/8/sys/ (props changed)
Modified: stable/8/sys/cam/scsi/scsi_xpt.c
==============================================================================
--- stable/8/sys/cam/scsi/scsi_xpt.c Sat Jun 9 09:04:59 2012
(r236802)
+++ stable/8/sys/cam/scsi/scsi_xpt.c Sat Jun 9 09:08:33 2012
(r236803)
@@ -293,6 +293,14 @@ static struct scsi_quirk_entry scsi_quir
},
{
/*
+ * Experiences command timeouts under load with a
+ * tag count higher than 55.
+ */
+ { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST3146855LW", "*"},
+ /*quirks*/0, /*mintags*/2, /*maxtags*/55
+ },
+ {
+ /*
* Slow when tagged queueing is enabled. Write performance
* steadily drops off with more and more concurrent
* transactions. Best sequential write performance with
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[email protected]"
